Oil burner



Sept. ll, 1923.

W. E. HARTMANN OIL BURNER 2 Sheets-Sheet 1 W E Heffi/mm? 2 @wow-.shan 2 W. E. HARTMANN OIL BURNER Sept' l,

Patented Sept. 11, 1923.

WALTER E. HARTMANN, OF NEW YORK, N. Y.

OIL BURNER.

Application led March 11, 1921. Serial No. 451,507.`

To all w /Lom t may concern.'

Be it known that I, VALTnn E. HART- MANN, a citizen of the United States, residing at New York city, in the county of New York and State of New York, have invented certain new and useful Improve ments in Oil Burners, of which the follow-v ing is a specification.

This invention has relation to oil burners, and has for one of its objects to provide a new form of burner tip whereby the oil may be discharged in a finely divided state to ensure rapid and complete combustion.

Another object of the invention is to provide a burner tip and barrel designed to conduct oil and steam to the tip to be discharged simultaneously to produce etlicient combustion.

Another object of the invention is to provide means for admitting air to the fire box in which the combustion of the oil takes place, to ensure perfect combustion and to provide n'ieans to control the admission of air whereby a maximum of eiiciency is obtained.

In addition to the foregoing this invention coniprehends improvements in the details of construction and arrangement of parts to be hereinafter described and particularly set forth in the appended claims.

In the accompanying drawings in which similar and corresponding parts are designated by the same characters of reference throughout the several views in which they appear,

Figure 1, is a view in longitudinal section of a fuel oil burner and air control means constructed in accordance with my invention.

Figure 2 is a view thereof in end elevation.

Figure 3 is a view thereof in plan.

Figure 4 is a view in end elevation of the burner tip. y

Figure 5 is a view partly in section of the barrel and burner attached.

Figure 6 is av view in section of the burner tip.

Figure 7 is a view in end elevation of the burner tip with the outer portion removed.

Figure 8 is asimilar view with a. part in place to show its purpose.

Figure 9 is a view in section of a modified forni of burner tip.

Figure 10 is a transverse section taken on the line 10-1O of Figure 9, and

Figure 11 is a view in section of a still. further modified form of burner tip.

VVithreference to the drawings, 10 indicates a tubular member forming the barrel and having a packing gland-l1 inserted in one end and a burner tipv to the other, said tip consisting of an inner body portion 12, cylindrical in form and reduced and threaded at one end to enter the barrel. A cylindrical casing 13 is applied over the body portion and a bolt 14 enters an opening in the closed end of the casing and into tapped opening in the body portion to hold the parts against separation. y A central bore 15 is formed in the body portion and a steam supply pipe 16 extends through the packing gland and enters said bore. More than one half of the end face of the body portion .12 is cut away to form a recess between the end of said body portion and the inner end face of the casing, to receive a substantially semi-circular plate 17 having a cutaway portion or recess 18 in the diainetrical side thereof.v A recess 19 is formed centrally in the end of the body portion and a narrow passage 2O forms a communication between the recess 19 and the bore 15. A pair of longitudinal oil ducts 21 are formed in the body portion adjacent the periphery at a spaced angular relation Aof about `thirty de,-

grecs, and shallow grooves 22 extend from the outer ends of said lconducts in converging relationl to the recess 19. A very narrow and elongated orifice 23 is formed inthe end wall of the casing 1.3 `opposite the recess 19 and the edges of said orifice are'preferably roughened. An oil 'supply pipe 2li is tapped into the barrel 10 and a connection 25 is made between the oil pipe 16 and the said steam pipe. A valve 26 is interposed in said connection. A valve 27 is interposed in the steam pipe between the connection 25 and barrel, and a valve 28 is interposed in the pipe 24 beyond the connection.

The wall ofthe fire box is shown at 29 and an opening 30 is provided therein which is surrounded by an air controlling device consisting of a frusto conical member 31 having three series of narrow apertures 32, 33 and 34v formed circumferentially yin the walls thereof. the barrel 10 extending through the apex of the cone member and into the opening` 30. Surrounding' the member.' 31 are three rotatable frusto conical, air regulating members 35, 36 and 37, each of which carries a segmental gear, the latter being indicated respectively at 38, 39 and 40, of varying angular circumferences, the gear 40 subtending the greatest angle of the three. A shaft 41 is stationarily mounted at its ends and carries three mutilatedgears 4Q, 43 and 44, the gear 42 meshing with the gear 8S and the other gears meshing` with their correspondingr gears in their order. Each of the members 3G and 37 are formed with a circumferential series of slots. 45 for registration with the slots of the inner frusto conical member 31 for varying the size of the openings.

Oil supplied through the pipe 24 flows through the barrel l0 into the oil ducts 21 4and down through the grooves into the recess 19 where it meets steam issuing from the port 20. The oil is thus forced through the slot. in a finely divided state where it burns with a fan shaped flame. The steam Aliowing through the` pipe 16 will heat the oil in the barrel previous to its combustion, thus ensuring extremely7 eflicient consumption of the fuel', 1f the oil ducts become vclogged the valve 26 may be opened to admit steam pressure into the barrel, thus forcing the oil through the ducts.

The openings 32. 33 and 34 are normally lapped by the portions of the outer frusto conical members between the slots 45 thereof. To admit air the shaft 41 is rotated. Owing to the relative sizes of the gears and the arrangement of their teeth the member 37 will be iirst rotated, the remaining members 36 and 35 remaining idle. As soon as the openings 34 andthe openings 45 of the member 37 are in full registration the member 36. will begin to rotate, the member 37 remaining in position,y and so on until all of the openings are in registration. Obviously, by arresting the adjustment in any position desired the amount of air passing through the registering slots into the lire box can be controlled,

A modified form of burner-tip is shown in figures 9 and 10 consisting of the body portion 12 as previously described but minus the casing 13 or cut away end tace. In lieu thereof a conical cap 46 is threaded upon the end of the body portion containing a conical channel 47 which is in alignment with the port 2O and containing a rod 48 said rod being triangular or of other formation in cross section. Spaces are thus delined around the sides of the channel which divides the flow of oil and steam and ensures atomization of the oil with a resultant diverging spray.

A still further modified form of burner tip is shown in Figure 1l which consists of a modified cap 46c, differentiated only from the cap 46 by the provision of a threaded tions therein may be made. therefore reserve the right and privilege of changing the form of the details of construction or otherwise altering the arrangement of the correlated parts without departing from the spirit of the invention or the scope of the appended claims.

Having thus' described my invention, what l claim as new and desire to secure by United ltit-ailes Letters Patent is rv 1. An oil burner system including a barrel for conducting oil and steam, a tip at one end to combine the oil and steam, a supporting means for the barrel having a series of air inlets. and means for successively varying the size of said inlets.

Q. An oil burner including a body portion with conduits to conduct fuel and steam, restricted longitudinal passages to conduct the fuel to the steam outlet, a frusto conical casing having a narrow outlet opposite the juncture of the fuel and steam outlets, to form a fan shaped spray and exterior steam regulating means for said casing.

3. An oil burner tip including a body portion having fuel and steam channels, converging shallow grooves in the face of the body portion to conduct the fuel to the steam outlet, and a frusto conical casing surrounding the body portion, the walls of said casinghaving elongated apertures for registration with the fuel and steam outlets, and exterior means for regulating` the steam supply to the casing.

4. An oil burner including a tube, a packing gland in one end, a burner tip at the other end having a central steam conduit, and longitudinal fuel conduits, a steam pipe passing through the tubular member for connection to the steam conduit, said fuel conduits communicating with the space around said pipe, a movable element for opening and closing the passage, and means for varying the volume and directing the steam and oil to the end of the tip.

5. An oil burner including a perforated frusto conical member to support a burner tip, a series of perforated frusto conical elements surrounding the first mentioned member and gear operating` means for rotating said frusto conical elements to, bring the perforations thereof in successivey registration with those of the first mentioned member,

WALTER E. HARTMANN.' [Ls] 

